diff --git a/modules/user/user.install b/modules/user/user.install
index a48feb5..355db41 100644
--- a/modules/user/user.install
+++ b/modules/user/user.install
@@ -120,6 +120,9 @@ function user_schema() {
     ),
   );
 
+  // Except the fact that Drupal SQL standards specify singular names for tables,
+  // "users" table is exception being plural as 'user' is a reserved in many
+  // databases, also it was easier than to catch up with escaping it.
   $schema['users'] = array(
     'description' => 'Stores user data.',
     'fields' => array(